Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 185.199.109.153 |
| Server Software | cloudflare |
| CDN | Cloudflare |
| Compression | gzip |
|
🔒 🟡 Mixed Content (1 HTTP resources) | The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers. |
|
ℹ 🔵 Missing HSTS | HTTP Strict Transport Security is not configured. Recommended for HTTPS sites. |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
|
ℹ 🔵 Missing X-Frame-Options | The site can be embedded in iframes by third parties (clickjacking risk). |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 185.199.109.153
Server Software cloudflare
CDN Cloudflare
Compression gzip
🔒 🟡 Mixed Content (1 HTTP resources) The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers.
ℹ 🔵 Missing HSTS HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://www.rsms.me:443 | 301 | HTTP/2 301 |
| 2 | https://rsms.me/ | 200 | HTTP/2 200 |
#1 URL https://www.rsms.me:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://rsms.me/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 8.3 ms |
| TCP Connect | 10.2 ms |
| TLS Handshake | 5.4 ms |
| Time To First Byte (TTFB) | 43.6 ms |
| Content Download | 0.1 ms |
| Total Response Time | 43.8 ms |
DNS Lookup 8.3 ms
TCP Connect 10.2 ms
TLS Handshake 5.4 ms
Time To First Byte (TTFB) 43.6 ms
Content Download 0.1 ms
Total Response Time 43.8 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | rsms |
| Twitter Card | summary |
Title rsms
Twitter Card summary
Detected Technologies
| Technology | Google Analytics Cloudflare Node.js |
Technology Google Analytics Cloudflare Node.js
HTTP Headers
| Date
| Thu, 23 Jul 2026 20:16:49 GMT |
| Content-type
| text/html; charset=utf-8 |
| Nel
| {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800} |
| Server
| cloudflare |
| Last-modified
| Mon, 27 Apr 2026 01:44:17 GMT |
| Access-control-allow-origin
| * |
| Expires
| Wed, 22 Jul 2026 02:38:14 GMT |
| Cache-control
| max-age=600 |
| Report-to
| {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=29OI%2FrJiBpo6%2FTmpQaEaeikO2FQOSSKhocQCDxwcFstaFt%2BrEyQ2GvACK%2Bknxd4ggY%2FkdFYcmKJQ8KSgg%2B7aQMGAWyZxsPyfEzrBdbXMc8nEpvwFleWUuHiX%2B1st15IZL%2B27O0Wb"}]} |
| X-proxy-cache
| MISS |
| X-github-request-id
| 3814:9ECC5:9C7C9:9FFE6:6A602ABE |
| Age
| 312 |
| Via
| 1.1 varnish |
| X-served-by
| cache-mrs1050110-MRS |
| X-cache
| HIT |
| X-cache-hits
| 0 |
| X-timer
| S1784837810.728292,VS0,VE2 |
| Vary
| Accept-Encoding |
| X-fastly-request-id
| 4db54c954d3b935cacbb18f39717246af81d76ad |
| Cf-cache-status
| DYNAMIC |
| Content-encoding
| gzip |
| Cf-ray
| a1fd5d76bc13565a-CDG |
| Alt-svc
| h3=":443"; ma=86400 |
Meta Tags
| Content-Type | text/html; charset=utf-8 |
| Viewport | width=device-width, initial-scale=1 |
| X-UA-Compatible | IE=edge |
| Apple-mobile-web-app-capable | yes |
| Apple-mobile-web-app-status-bar-style | black |
| Apple-mobile-web-app-title | RSMS |
| Fb:admins | 728642302 |
| Fb:app_id | 38027689216 |
Date Thu, 23 Jul 2026 20:16:49 GMT
Content-type text/html; charset=utf-8
Nel {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Server cloudflare
Last-modified Mon, 27 Apr 2026 01:44:17 GMT
Access-control-allow-origin *
Expires Wed, 22 Jul 2026 02:38:14 GMT
Cache-control max-age=600
Report-to {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=29OI%2FrJiBpo6%2FTmpQaEaeikO2FQOSSKhocQCDxwcFstaFt%2BrEyQ2GvACK%2Bknxd4ggY%2FkdFYcmKJQ8KSgg%2B7aQMGAWyZxsPyfEzrBdbXMc8nEpvwFleWUuHiX%2B1st15IZL%2B27O0Wb"}]}
X-proxy-cache MISS
X-github-request-id 3814:9ECC5:9C7C9:9FFE6:6A602ABE
Age 312
Via 1.1 varnish
X-served-by cache-mrs1050110-MRS
X-cache HIT
X-cache-hits 0
X-timer S1784837810.728292,VS0,VE2
Vary Accept-Encoding
X-fastly-request-id 4db54c954d3b935cacbb18f39717246af81d76ad
Cf-cache-status DYNAMIC
Content-encoding gzip
Cf-ray a1fd5d76bc13565a-CDG
Alt-svc h3=":443"; ma=86400
